Vise.



H. R. CHRISTIANS.

VISE. APPLICATION FILED JAN. 21, 190s.

Patentedl Dec. 8', 1908.

A E, .Y 6. F my HANS R. CHRISTIANS, OF BROOKLYN, NEW YORK.

VISE

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed January 21, 1908. Serial No. 412,014.

To all whom it may concern:

Be it known that I, HANS R. CHRISTIANS, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Vises, of which the following is a specification.

This invention relates to vises and has for its object certain new and novel features which permit of the immediate release or adjustment of the jaws so that time may be saved by the party operating the vise where adjustments are often necessary. These and other objects and features of the invention are more fully described in the following specification, set forth in the claims and shown in the drawings forming a part of this application and where:-

Figure 1 is a side elevation of the improved vise partly in section. Fig. 2 is a front view of the movable jaw. Fig. 3 is a side elevation of a modified form of the invention. Fig. 4 is a front view of the stationary jaw. Fig. 5 is another modified form of the vise adjustment.

wWhile the vise illustrated in the drawings has a swinging jaw working in conjunction with the stationary7 jaw it is possible to apply the new features to that class of vises where the movable jaw slides with relation'to the fixed jaw. The latter jaw 5 as shown is adapted to be secured to a bench 6 and to more firmly brace it has the depending member 7 having at its lower end an ear 8 to which is pivoted the movable jaw 9. To the front face of the jaw 5 is also pivoted the rack bar 10 which passes through a corresponding opening in the movable jaw 9.

In the front face of the movable jaw is a recess 11 to contain a movable block 12 with a stud 13 and on the same rotates a worm wheel 14 having secured to it a ratchet wheel 15. This stud also carries an arm 16 adapted to oscillate and provided with a pawl 17 which engages the ratchet wheel 15 when elevated by means of the lever 18 and link 19 when the operator grasps the handle 20.

The above described mechanism is to force the movable jaw 9 to its work or remove it but where the jaw is to be removed some distance along the rack bar the worm wheel 14 is disengaged from the rack bar by forcing the carrying block 12 down the recess 11 by means of the handle 21 whose stem 22 is connected with the block and surrounded by a spring 23 to force the worm into engagement with the rack. The lower side of the recess is formed by a cross piece 24 which is perforated for the passage of the stem 22. In case it is desired to bring the jaws together the block 12 is depressed by means of the handle 21 and the worm wheel disengaged. The jaws can then be closed and on the release of the handle 21 the worm wheel again engages the rack and holds the jaws in their proper relation.

In the modified form shown in Figs. 3 and 4 the rack bar 25 slides in a recess in the stationary jaw 5 while its outer end carries a pin 26 playing in the slot 27 of the swinging jaw 28. The rack bar 25 is operated by a worm wheel 29 carried in a yoke 30 sliding in a recess 31 and having a stem 32 which runs through the lower wall 33 of the recess and the lug 34. The yoke and worm wheel are normally forced upward by the spring 35 but are forced downward by a wedge 36 playing in the slot 37 and operated by a bell crank lever 38 which is pivoted to the side of the stationary jaw. The throwing of the lever 38 quickly releases the rack 25 so that the jaw 28 may be moved inward or outward to the 'required distance and when the engagement of the worm wheel is again permitted the jaw may be forced against any article to be held in the vise. This improved means of releasing and adjusting the jaws of a vise may be further modied without departing from the essential features shown and the operation may be easily and quickly effected while the parts are few and inexpensive. The weight of the moving jaw is compensated for by the spring 39 which assists in forcing the jaw forward while a handle 40 may be used to manipulate the jaw.

In the modified form shown in Fig. 5 the worm wheel 41 is held in its operative position by the concave block 42 pressed upward by means of a coiled spring 43 surroundin the stem 44. This stem may be depresse by any of the above described means and the worm wheel, whose threads bear upon the concave face drops with the block and out of engagement with the rack bar 45. The front wall 46 of the recess 47 is slotted at 48 to allow the vertical movement of the worm wheel shaft.

What I claim as new and desire to secure by Letters Patent is:

1. In a vise, the combination with stationary and pivoted jaws, of a rack bar pivoted to one of the jaws and playing through an opening in the other, a worm wheel carried by the jaw with the opening and adapted to be slid along the same, means for turning the wheel, and means for releasing the worm wheel from engagement with the rack bar.

2. In a vise, the combination with a stationary and a pivoted jaw, of a rack bar pivoted to one of the jaws and playing through the other jaw, a worm wheel engaging the rack bar, a ratchet wheel secured to the worm, a handle and pawl to operate the ratchet wheel and means for releasing the worm wheel.

3. In a vise, the combination with cooperating jaws, of a rack bar pivoted to one of the jaws and passing through the stem of the other', a worm wheel with a shifting axis, means for shifting the axis so that the wormwheel may be brought into and out of engagement with the rack bar, a ratchet wheel on the axis and a handle with a pawl loose on the axis to turn the ratchet and worm wheel.

4. In a vise, the combination with stationary and pivoted aws, of a rack bar pivoted to one of the jaws and playing through an opening in the other, a worm wheel carried by the jaw with the opening and adapted to be slid along the same, means for turning the wheel, means for releasing the worm wheel 4from engagement with the rack bar and means yieldinfrly holding the work wheel in engagement with the rack bar.

5. In a vise, the combination with a pair of jaws, of a rack bar extending through one of the jaws, a worm wheel engaging the rack bar, a block carried by the wheel, and means connected to the block for yieldingly .holding the worm wheel in engagement with the rack bar.

6. In a lvise, the combination with a stationary and a pivoted spring jaw, of a rack bar pivoted to one of the jaws and playing through the other aw, a worm wheel engaging the rack bar, a ratchet wheel secured to the worm wheel, a handle .and a pawl to operate the ratchet wheel, and a handle for releasing the worm wheel.

7. In a vise, the combination with a stationary and a pivoted jaw, of a rack bar pivoted to one of the jaws and extending through the other jaw, a worm wheel engaging the rack bar, a ratchet wheel secured to the worm, means for operating the ratchet comprising a handle, a pawl and a link, the latter connecting the pawl to the handle, and an oscillating arm carried by the worm wheel for turning t-he latter, said arm carrying the means for operating the ratchet.

In testimony whereof, I aiiiX my signature in presence of two witnesses.

HANS R. CHRISTIANS.

Witnesses:

JAMES F. DUHAMEL, MAE W. CLINTON. 

